Can anyone tell me if there is a electrical board in a 1990 Sunsport. I got under the dash expecting to find a board with a hot and a ground terminal but it looks like all of the wires to the dash are just bundled and run into the bilge. I just need a place to connect some switches for 3 aerator pumps.

In 1990 there was not. There is a breaker panel under the dash that should have an open breaker that you could populate and get you power from. If you have any other questions give us a call at the factory 865-983-9924x131 or ask for technical service. Thanks